Hello, so it looks like kamailio used random port for opening connections to our partners but did not updates record-route port properly. AWS has symmetric NAT and that works fine.
Is there any way how to identify port and rewrite record-route? Thanks. Bye, Michal > On 7 May 2020, at 17:25, Michal Popovic <[email protected]> wrote: > > Hello, > > our kamailio used for sip trunk interconnections is behind NAT and our cloud > provider opens random outgoing ports for outbound connections. > Our record-route is set to our external address and port 5060, that is > probably incorrect, but we did not had any issues. > One of our partners suddenly begin sending BYEs to the port advertised in > record-route instead of port from where he received call. > > What is a correct approach here if we are not able to determine open port > behind NAT? > > Bye, > Michal > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
